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Brand Name : Zhongshi
Model Number : sucker rod
Certification : API ,ISO ,QHSE
Place of Origin : China
MOQ : 1
Price : Negotiable
Payment Terms : T/T
Supply Ability : 1000pcs
Delivery Time : 2weeks
Packaging Details : exported packing
Type : Sucker Rod,pony rod
Size : 1 1/8",3/4",1",5/8"-1-1/8"
Grade : D,KD,HY,K,HL
Material : alloy steel,AISI 4130
Length : 25-30ft,. or customized
Product name : Alloy Steel Sucker Rod
API 11B Spray Metal Coating Chemical Class T And Class SM Coupling For Sucker Rods
Products Description:
Class T and Class SM coupling for sucker rods are manufactured as per API Specification 11B. For the thread cutting, we are using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
Class T coupling is using AISI 5140 to manufacture.The coupling is coated using phosphate chemical treatment or black oxide on customer's request.For Class SM coupling, the spray metal is a specification hardening process and is applied on the base metal.
The couplings are available in full size, slim hole and over size.Also, combination couplings are available for different diameters (sub-coupling) for both Class T and Class SM couplings.
We recommend changing sucker rod couplings after three make-ups, provided the connection threads have been inspected and deemed acceptable for reuse.
Technical Specifications:
Chemical Properties: Class T Coupling | |
Steel | AISI 5140 |
C | 0.37~0.44 |
Si | 0.17~0.37 |
Mn | 0.50~0.80 |
P | ≤0.040 |
S | ≤0.040 |
Spray Metal Coating Chemical Properties SM Coupling | |
Carbon | 0.50~1.00 |
Silicon | 3.50~5.50 |
Phosphorus | 0.00~0.02 |
Sulfur | 0.00~0.02 |
Chromium | 12.00~18.00 |
Boron | 2.50~4.50 |
Iron | 3.00~5.50 |
Cobalt | 0.00~0.10 |
Titanium | 0.00~0.05 |
Aluminum | 0.00~0.05 |
Zirconium | 0.00~0.05 |
Nickel | Balance |
Mechanical Properties: Class T Coupling | |
Tensile Strength, PSI: (MPa) | 95,000 (655) |
Hardness Rockwell A | 56/62 |
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Spray Metal Coating Sucker Rod Coupling Chemical Class T Images |